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author | Nikolay Korolev <nickvnuk@gmail.com> | 2020-05-11 20:21:09 +0200 |
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committer | Nikolay Korolev <nickvnuk@gmail.com> | 2020-05-11 20:21:09 +0200 |
commit | 9b23e33c36facdad4b6f669501dbee7fa82ef50a (patch) | |
tree | 3f81b31669c2187720881afa07e2ed3db93d6694 /src/audio/oal/stream.h | |
parent | Merge remote-tracking branch 'upstream/miami' into miami (diff) | |
parent | Merge remote-tracking branch 'origin/master' into miami (diff) | |
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Diffstat (limited to 'src/audio/oal/stream.h')
-rw-r--r-- | src/audio/oal/stream.h | 112 |
1 files changed, 112 insertions, 0 deletions
diff --git a/src/audio/oal/stream.h b/src/audio/oal/stream.h new file mode 100644 index 00000000..f1e5f458 --- /dev/null +++ b/src/audio/oal/stream.h @@ -0,0 +1,112 @@ +#pragma once +#include "common.h" + +#ifdef AUDIO_OAL +#include <AL/al.h> + +#define NUM_STREAMBUFFERS 4 + +class IDecoder +{ +public: + virtual ~IDecoder() { } + + virtual bool IsOpened() = 0; + + virtual uint32 GetSampleSize() = 0; + virtual uint32 GetSampleCount() = 0; + virtual uint32 GetSampleRate() = 0; + virtual uint32 GetChannels() = 0; + + uint32 GetAvgSamplesPerSec() + { + return GetChannels() * GetSampleRate(); + } + + uint32 ms2samples(uint32 ms) + { + return float(ms) / 1000.0f * float(GetChannels()) * float(GetSampleRate()); + } + + uint32 samples2ms(uint32 sm) + { + return float(sm) * 1000.0f / float(GetChannels()) / float(GetSampleRate()); + } + + uint32 GetBufferSamples() + { + //return (GetAvgSamplesPerSec() >> 2) - (GetSampleCount() % GetChannels()); + return (GetAvgSamplesPerSec() / 4); // 250ms + } + + uint32 GetBufferSize() + { + return GetBufferSamples() * GetSampleSize(); + } + + virtual void Seek(uint32 milliseconds) = 0; + virtual uint32 Tell() = 0; + + uint32 GetLength() + { + return float(GetSampleCount()) * 1000.0f / float(GetSampleRate()); + } + + virtual uint32 Decode(void *buffer) = 0; +}; + +class CStream +{ + char m_aFilename[128]; + ALuint &m_alSource; + ALuint (&m_alBuffers)[NUM_STREAMBUFFERS]; + + bool m_bPaused; + bool m_bActive; + + void *m_pBuffer; + + bool m_bReset; + uint32 m_nVolume; + uint8 m_nPan; + uint32 m_nPosBeforeReset; + + IDecoder *m_pSoundFile; + + bool HasSource(); + void SetPosition(float x, float y, float z); + void SetPitch(float pitch); + void SetGain(float gain); + void Pause(); + void SetPlay(bool state); + + bool FillBuffer(ALuint alBuffer); + int32 FillBuffers(); + void ClearBuffers(); +public: + static void Initialise(); + static void Terminate(); + + CStream(char *filename, ALuint &source, ALuint (&buffers)[NUM_STREAMBUFFERS]); + ~CStream(); + void Delete(); + + bool IsOpened(); + bool IsPlaying(); + void SetPause (bool bPause); + void SetVolume(uint32 nVol); + void SetPan (uint8 nPan); + void SetPosMS (uint32 nPos); + uint32 GetPosMS(); + uint32 GetLengthMS(); + + bool Setup(); + void Start(); + void Stop(); + void Update(void); + + void ProviderInit(); + void ProviderTerm(); +}; + +#endif
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